to display single row from database and next to display other question

Hi all,
I am using JSP with MYSQL backend.
In my project we have 100 questions in database
we have to display first question
on clicking the button it has to display the next question.

i tried it
first question is displayed, but i am facing a problem while retieving the next question in the jsp page.
its giving null.

I am new to jsp. can any one help me please

Thanks in advance,
Usha
View Answers

July 1, 2010 at 3:12 PM

Hi Friend,

Try the following code:

next.jsp:

<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>

<HTML>
<BODY>
<% int current = 0;
Connection connection = null;
ResultSet rs = null;
%>
<FORM NAME="form1" ACTION="next.jsp" METHOD="get"><%
if (request.getParameter("hidden") != null) {
current = Integer.parseInt(request.getParameter("hidden"));
}
Statement statement = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test";,
"root", "root");
statement = connection.createStatement();
rs = statement.executeQuery("select * from question");
for (int i = 0; i < current; i++) {
rs.next();
}
if (!rs.next()) {
out.println("All questions are over");
} else {
%>

<TABLE>
<TR><TH><%=rs.getString(2)%></TH><TD><input type="text"></TD></TR>
</TR>
</TABLE>
<BR>
<INPUT TYPE="hidden" NAME="hidden" VALUE="<%=current + 1%>">
<INPUT TYPE="submit" VALUE="Next">
</FORM>
<%
}
}
catch (Exception ex) {
}
finally {
rs.close();
statement.close();
connection.close();
}
%>
</FONT>
</FORM>
</body>
</html>

Thanks









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